Locomotive-boiler-feed apparatus



April 16,- 1929, N'. M; LOWER 'LOCOMOTIVE BOILER FEED APPARATUS FilgiDo. 20 zsneets-sneet f i To)! ATTORNEYS.

Patented Apr. 1e, '19 29 "UNITED STATES."

NATHAN M. LOWER, OF BELLEVUE,PENNSYDVANIA, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO THE STANDARD STOKER COMPANY INC,

PORATION OF DELAWARE.

PATENT QFFICE.

on NEW YORK, N. 'Y., A con- LOCOMOTIVE-BOILER-FEED APPARATUS.

Application filed December 20, 1920. Serial No. 431,893.

This invention relates to the means for supplying the feed water to theboilers of steam generatingequipment and is particularly useful inconnection with locomotive practice.

The primary object of my invention s to provide means of the characterspecified which will automatically supply the feed water at all times tothe boiler substantially in proportion to the demand of the workingconditions obtaining.

I have developed my invention in connection with a locomotive in whichthe draft is created by means of a turbine operated ex-' haust fanlocated in the smokebox and in the accompanying drawings I haveillustrated it in such association.

Other objects of the invention relate to the provision of a boiler feedpump with suitable motor means T therefor actuated by exhaust steam fromthe main cylinders of the locomotive, and to the provision of a suitablefeed water heater which utilizes the steam exhaust, e'd from said motormeans.

' In addition to the foregoing objects and in connection with anexhausting mechanism of the character above described, my inventioncontemplates the provision of a boiler feed pump which is actuated bythe motor means which is provided for driving the exhausting fan.

Stated in other words my invention has for its object the provision of aboiler feed apparatus by means of which Iam enabled to automaticallydeliver the feed water to the boiler. substantially in proportion to thedemand of the Working conditions obtaining as evidenced or registered bythe exhaust from the main cylinders.

These together with such other objects as may hereinafter appear or areincident to my invention I obtain by means of a construction illustratedin the accompanying drawings-in a preferred form and as embodied in alocomotive. Of the drawings Figure 1 is a longitudinal vertical sectionthrough the forward end of a locomotive on line 11 of Figure 2 andFigure 2 is a somewhat irregular section and partial elevationtransversely of the structure illustrated in Figure 1 taken.

as indicated on Figure 1.

Within the smoke box 1 and located be tween the tube sheet 2 and thestack 3 I have provided the transverse partition or chamber structureets'uitably shaped to conform to the adjacent structure and providedwith a'funnel shaped outlet 5 at'its forward end. A suction exhaust fan6is mounted immediately adjacent the outlet 5 and the products ofcombustion are thrown outwardly therefrom in a manner well known in theart and discharged to the stack through the annular casing or housing 7and the pctticoat pipe 8. Thecinders are thrown by the force of theirimpact against the inclined surfaces 9 into the annular chamber. 10 fromwhich they are discharged through the piping 11. The shaft 12 forrevolvingthe fan projects forwardly therefrom The outer end of the shaftis provided I with a worm 20 which is adapted to drive a gear 21carrying a crank arm 22 at each side thereof. These crank arms aresuitably con nected to the piston roc of a-reciprocating pump within thehousing 2-1. A housing 25 encloses the gear and tl wornn Between theturbine and the pumping unit are arranged aj plurality of water tubes 26within a steam. casing or housing 27. The tubes and the housingwhichcontains them are bent in a U shape, the cndsof the tubescommunicating with .a water inlet header 28 at one side and with a wateroutlet header 29 at the other side.. Feed Water from any suitable sourceof supply is delivered through the pipe 30 to the feed Water pump 24which forces it through thepipe 31 to the inlet header 28 from whence itpasses through the tubes and out.

through the outlet header 29 to the boiler check valve 32 through thepipe 88. As shown, turbineQshaft bearings 13, 14, annular fecdwaterheater 26, 27, and feed pump 24 are combined in a unitary'structureahead of the chamber structure 4, 7, around the fan shaft 12. Theturbine and its steam supply chainber 13 are mounted at therea'i of thefeedwater heater casing 26, andthe pump 24 on its front side. I

The steam which was delivered to the turbine through the openings 18enters'the space within the tube casing 27 through a pluralityofopenings 34. From the heater casing the "steam passes outthrou h anotherseries of. openings 35 into the smo e box from which it escapes throughthe stack. The structure is braced by means of the tie plate 36 which ispivoted at its outer end uponthe pin. 3'( to the shell of the smoke box.

The operation of the device When the engine is working, exhaust steamfrom the main cylinders of thelocomotive (not shown) is. deliveredthrough the hollow castinglG to the actuating motor which in thisinstance is shown afs-being aturbine.

The fan' is thereby revolved and'aets to ex- 'ha'ust' the products ofcombustion through the flues 38 in the manner wellfknown inthe ,art. Thepump actuatingxmechanism be arranged on the same shaft withthefan an theturbine, it will be seen that it is 's-' sible to operate the pump at as eedwliic is proportionate to the demand o the working conditionsobtaining. The harder the locomotive is Working" the more exhaust steamwill be deliveredto the turbine and the faster will the exhausting'fanand thejfeed water pum be operated. By proper'ex'periment theturbine, the. fan and the ump can be so proportioned with respecttooiifzihother as to enable the pump to deliver feed water to the.

boiler substantially in proportion to the demand of the-workingconditions obtaining.

. There may be occasions when it is ,de-j sirable or necessary to renderthe feed water pump partially or, even wholl 'inefiective and to thisend I have provided the by-pass pipe 39, see Figure 2 particularly. Avalve 40 interposed in this pipe 39 is manually controlled from the cabthrough the shaft 41 and crank arm 42, the latter being connected to asuitable reach rod not shown. When the valve 40 is opened the pump 24will produce a circulation around through the pipe 39 instead of upthrough the pipe 31 and into the boiler through the check valve 32.1Such action will take place by reason of the resistis as followsz an'cewhich is encountered in the pipe 31 due to the high boiler pressure.

In the embodiment of my invention herein illustrated to' operate thefeed water pump operated by the locomotive exhaust steam,

a feedwater heater for the locomotive around the shaft receiving theturbine exhaust; and a feed pump for the locomotive in front of said:feedwater heater driven by the shaft.

2. The combination with a steam locomocharging to the stack, and a fanat the forward end of said structure for passing the gases therethrou has aforesaid; of a structure in the smo e box, ahead of saidifirstmentioned structure, comprising a feedwater heater around the fan shaft,a turbine on said 'tive smoke box, a chamber structure therein receivinggases from boiler flues and dis-.

shaft operated by. the locomotive exhaust steam and discharging intosaid .feedwater heater from one sidethereof, and a feed pump for thelocomotive at the other side of said feedwater heater, driven from saidshaft. I

3. The combination with-a steam locomotive smoke box, a chamberstructure therein receiving gases from boiler flues and discharging tothe stack, and a fan at the forward end of said {structure for passingthe gases therethrough "as aforesaid; of a structure in the smoke box,ahead of said first mentioned structure, comprising an-annular feedwater heater'around the fan shaft, and a turbine on said'shaft operatedby the locomotive exhaust steam and discharging into ."said feedwat'erheater. 1

In testimony. whereof, I signed my name NhTHAN M. LOWER.

have hereunto

